周代五礼用乐主要有“金奏”、“正乐”、“兴舞”、“无算乐”和“歌彻”五种,本文论述其“正乐”。①“正乐”又名“正歌”②,由升歌、下管(或笙入)、间歌、合乐四节组成。③四节有不同的演奏场所与演奏方式,“升歌”在堂上,下管(或笙入)在堂下,“间歌”、“合乐”由堂上堂下或间或合而成,如阮元云:“自天子 There are five main types of music in the Zhou dynasty, such as ”Golden Son“, ”Zheng Le“, ”Xing Wu“, ”No Truth“ and ” “Positive music”. ① “正 乐 ” aka “” 正歌 “②, by the song, the next tube (or Sheng), between songs and music composition. ③ Four quarters have different playing places and performances, ”Singing “ in the hall, the next tube (or Sheng) in the hall, ”song “, ”cole “ by the hall or Between or together, such as Ruan Yuan Yun: ”since the Son of Heaven